Coke-oven.



No. 728,953. PATENTED MAY 26, 1903.

G. M. MILLER.

COKE OVEN.

APPLICATION FILED AUG 7. 1902.

NO MODEL.

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UNITE STATES Patented May 26, 1903.

PATENT OFFICE.

COKE-OVEN.

SPECIFICATION forming part of Letters Patent N 0. 728,953, dated May 26,1903.

Application filed August '7, 1902. Serial No. 118,794. (No modeLl 1'0aZZ whom, it may concern:

Be it known that I, GEORGE M. MILLER, of Uniontown, in the county ofFayette, State of Pennsylvania, have invented certain new and usefulImprovements inCoke-Ovens, of which the following is a completespecification, reference being had to the accompanying drawings.

The object of my invention is to produce improvements in coke-ovenswhereby the drawing of the coke after firing is facilitated, beingeffected merely by the withdrawal of a slide-bottom in the oven proper,whereby the coke in the act of discharging from the oven is delivered atthe place desired-as, for example, into a c arand whereby provision ismade for the retention of sufficient residual heat in the oven forrestarting the fire after each coke -withdrawing operation is completed.

In the accompanying drawings, Figure I is a front elevation of a portionof a coke-oven embodying my invention, the front door being shown asopenand the floor-slide removed. Fig. II is a section on the line II II ofFig. I. Fig. III is asection on thelineIIIIII of Fig. II.

Referringto the numerals on the drawings, 1 indicates the side walls orbody part of a coke-oven, which is preferably constructed'in conformitywith the well-known beehive type of oven. -Ata suitable height withinthe walls of the oven I provide a slanting floor 2. The floor 2 ispreferably made of the same material of which the body part 1 isconstructed and is inclined throughout its extent toward an oblongvertical opening or recess 3 in the lower portion of the body part. Inthe upper part of the recess 3 I provide a slide-plate 4 or movablefloor-section, which is preferably supported upon a rectangularhorizontal frame 5, preferably made integral with the side pieces 6 and7 of a chute-frame, of.

which 8 indicates the inclined floor. The side pieces 6 and 7 preferablyextend flush with the slanting bottom 2 along its-lower ends, and thevertical frame upon which the sliding bottom 4 slides preferablyconsists of flanges projecting oppositely from the side pieces 6 and 7and a cross-piece 9, which spans the doorway, whose frame is indicatedby the reference-numeral10. When the sliding bottom 4 is in place in theoven, as shown bottom or hearth within the oven.

in Fig. II, it forms in combination with the slanting portion 2 of thebottom a continuous The inclined floor 8 of the chute runs from theextreme rear Wall of the oven outwardly through an opening 11 in thefront wall of the oven. Near the lower end it is provided with a screenor grid 12. The lower end of the floor 8 and of the side pieces 6 and 7may extend any desired distance beyond the wall of the oven in orderthat it may be thereby enabled to make discharge at any point desired,the form and extent shown of those members of my device beingillustrated merely for the purposes of explanation.

The grid maybe of any desired extent and of any size of mesh. It islocated in practice above a screening-box 14. The bottom 15 of the boxis not only underneath the floor 8 of the chute, but does not extendinwardly so far as that floor and is adapted to separate the screeningsfrom the coke.

The sliding bottom 4, the form of which accommodates it to its function,the side pieces 6 and 7, and the screening-box are all preferably madeof metal, and all but the sliding bottom 4 are preferably made in a.single piece.

During the coking process the operation of my oven is subst'antiallylike that of other coke-ovens, the floor 4 being of course in the closedposition shown in Fig. II and the opening into the door-frame 10 beingproperly closed. After firing in order to withdraw the contents of theoven all that is necessary is to pull out the sliding bottom 4, when theentire contents of the oven are precipitated over the slanting floor 2directly into the chute, whence they slip easily over the floor 8 and.the grid 12, being discharged from the end of the chute, as into a car.In passing over the screen 12 the coke is properly screened and isdischarged cleaned and ready for use from the end of the chute. Byreason of the presence of the inclined 'floor 2 abundant heat isretained in the oven notwithstanding the presence therein of the slidingbottom 4 for restarting the oven after each drawing of the coke. Afterthe withdrawal of the sliding bottom 4 and the discharge of the coke tobe drawn upon the fioor 8 the coke is sifted over the screen 12, the

matter sifted out or screenings being separated from the coke and thecoke and screenings discharged separately.

What I claim is- 1. In a coke-oven, the combination with an inclinedfloor therein and an inclined chute communicating directly therewith, ofa movable floor-section above the chute, substantially as set forth.

2. In a coke-oven, the combination with an inclined floor therein, and achute provided with a screen-bottom, of a sliding floor-section abovethe chute, substantially as and for thepurpose specified.

3. The combination with a coke-oven and its floor, of a chutecommunicating with the interior of the oven, said chute projectingthrough the wall of the oven, a screen in the chute-floor beyond theWall of the oven, and a movable floor-section above the chute,substantially as specified.

4:. The combination with a coke-oven and an inclined floor therein, of achute provided with a screen-bottom, said chute extending through theWall of the oven, and a movable floor-section above the chute.

underneath the sliding bottom and projecting outwardly through the wallof the oven.

7. The combination with a coke-oven, sliding floor-section and aninclined chute, of a screen located in the bottom of the chute near itslower end, and a screening-box provided with an inclined floor locatedunderneath the screen, and means for discharging the screeningsseparately from the coke.

In testimony of all which I have hereunto subscribed my name.

GEORGE M. MILLER.

Witnesses:

-D. WILLIAMS,

A. C. HERBERT.

